Inovance CV800 Series, User Manual, Page: 23 / 37

Fault name Panel display Troubleshooting Countermeasure
Motor tuning
failure
Tuning timeout
The motor is not connected or an
output phase is open; confirm that
the motor is off load.
Magnetic pole position
tuning failure of
synchronous motor
Confirm that motor rated current
parameter (F1-03) has been set
according to motor nameplate.
Reduce the setting value of
“Synchronous motor initial position
angle detection current
” F2-29.
Transient leakage
inductance tuning
failure of asynchronous
motor Inverter power too small; select
suitable inverter based on motor
power.
EEPROM
reading
writing failure
EEPROM reading
writing failure
If communication writing function
code occurs, confirm whether RAM
address of the corresponding
function code is being set;
EEROM chip damaged, contact
manufacturer to replace the control
panel.
Motor tuning
results
warning
The tuned stator
resistance is outside
the reasonable range Wrong motor rated voltage and rated
current parameter settings; please
set correct F1 set motor rated voltage
(F1-02), motor rated current
(F1-03) parameters according to the
motor nameplate; confirm that
parameter tuning is carried out when
the motor is still;
The tuned
asynchronous motor
rotor resistance is
outside the reasonable
range
The tuned
asynchronous motor
no-load current and
mutual inductance are
beyond the reasonable
range. If such warning
is reported, the inverter
will calculate the mutual
inductance and no-load
current based on known
motor parameters, and
the values might be
different from the
optimal values
Set correct F 1 set motor parameters
according to the motor nameplate;
confirm that the motor is non-loaded
before tuning;
The tuned synchronous
motor counter emf is
beyond the reasonable
range. Confirm that motor rated voltage
parameter (F1-02) has been set
according to motor nameplate;
confirm that the motor is non-loaded
before tuning;
Inertia tuning failure Confirm that motor rated value
parameter (F1-03) has been set
according to motor nameplate;
Earthing
short circuit Earthing short circuit of
the motor Change or check the cable or motor
for earthing short circuit;
Motor
interphase
short circuit Motor interphase short
circuit two-phase short-circuit in output
UVW
Excessive
speed
deviation
Encoder parameter
setting is incorrect Set correct encoder parameters
No parameter tuning
was performed Perform parameter tuning
Speed deviation is too
excessive and the test
parameters F9-69 and
F9-70
are not
reasonable
Set reasonable testing parameters
based on the actual situation
Motor over-
temperature
fault
Wiring of the
temperature sensor is
loose Check the temperature sensor wiring
and complete troubleshooting
Motor temperature too
high Raise carrier frequency or take other
cooling measures to cool the motor
F9-57 motor
over-temperature Increase the motor over-temperature
protection threshold (set at 90~100